Wireless sensor



FIG. 1 is a perspective view of a wireless sensor according to our new design.

FIG. 2 is a front view thereof.

FIG. 3 is a left side view thereof.

FIG. 4 is a right side view thereof.

FIG. 5 is a top view thereof; and,

FIG. 6 is a bottom view thereof.

The rear view forms no part of the design and is omitted. 

We claim the ornamental design for a wireless sensor, as shown and described. 